In this week's spotlight: a trio of human biology and health science projects that invite teachers, families, and students to explore the way the human eye works. What happens when you stare at something for a period of time and then look away? You might continue to see the image, what is called an afterimage. We have versions of this exploration for an independent student project, a family activity, or a classroom activity!

For another look at afterimages and thoughts on tying this hands-on science to Halloween and to nudging your students to experiment with Scratch to make a simple computer program to demonstrate afterimages, see: "A Trick of the Eye for Halloween."

Scratch is a great way to get kids started exploring computer logic as they create fun games or applications. (See the post for additional links to resources and Project Ideas at Science Buddies!)

You can find this page online at: https://www.sciencebuddies.org/blog/eye-science-weekly-science-project-idea-and-home-science-activity-spotlight

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